Car truck



May 13, 1930. v V s. P BUSH 1,758,350

CAR TRUCK Filed Sept. 15, 192'? 2 sheets-sheet Z Patented May 13, 1930UNITED. STATES PATENT OFFICE SAMUEL P. BUSH, OF COLUMBUS, OHIO, ASSIGNORTO THE BUCKEYE STEEL COMPANY, OF COLUMBUS, OHIO CASTINGS CAR TRUCK.

Application filed September 15,1927. Serial No. 219,707.

This invention relates more particularly to car trucks embodying lateralmotion rollers between the spring cap and the bolster, and one object isto attain the maximum roller surface while another object is to impartadditional stitl'ness to that portion of the spring cap which takes theload of the outer springs. The invention also has for its object theformation of the spring cap so that it will fit '10 within the columnsof the side frame and be held against movement transverse to the sideframe while it will retain in position the springs which may be housedor partly housed within the columns. An assemblage embodying theinvention is illustrated in the accomianying drawings and will behereinafter fully described, the novel features being particularlydefined in the appended claims.

In the drawings:

Figure 1 is a side elevation of a portion of a car truck embodying thepresent improvements;

Figure 2 is a vertical section on the line 2-2 of Fig. 1;

3-3 of Fig. 1;

Figure 4 is a detail section on the line H of Fig. 2.

Figure 5 is a detail section on the line 5-5 of Fig. 1.

As shown, the side frame includes an upper compression member 1, a lowertension mem-, her 2, and columns 3 connecting said'memhers. The columnsare of the arcuate form shown in Figure 3 to house or partly house someof the spring members and spring seats 4 are formed, on the tensionmember at the lower ends of the columns, the end of the spring plank 5resting upon the tension member between said seats and flush therewitlnThe springs, indicated at 6, are supp orted by the spring plank and thespring seats, two of the springs, in the illustrated arrangement,resting partly upon the spring seats and partly upon therespectivelyadjacent portions of the spring plank. and the columns areformed with wings or lateral extensions 7 which aid inrestraining.transverse movement of the springs relative to the springplank and also form wearing and guiding Figure 3 is a horizontal sectionon the line the outer springs.

arms for the end of the bolster 8, the bolster being provided withvertical stop shoulders 9 which, by contact with the wings 7, preventexcessive endwise movement of the bolster. Covering the upper ends ofthe springs is a cap 10 which is provided on its under side with studs11 and depending end flanges 12 to center the springs and retain them inplace, and this cap 'has its end portions fitting between the wings 7while its central portion is formed with extensions 13 to fit within thecolumns. In the upper surface of the cap are concave pockets or seats14: and in the under side of the bolster are similar matingpockets 15receiving lateral-motion rollers 16, the cap being formed with flanges17 at the ends of the, several pockets to retain the rollers therein.The bolster is provided on its under side with depending side flanges 18which cooperate with the flanges 17 to retain the inner and outerrollers in place but are notched to accommodate the ends of the centralroller, this roller extending over the extensions 13 of the cap.

The inner and outer rollers are as long as the space available betweenthe wings 7 but the middle roller is considerably longer and extendsinto the columns, thereby providing a maximum combined supporting lengthof rollers and adding depth of support to that portion of the springgroup within the walls of the columns. Of course, any number of rollersmay he used but there should always be one roller suhiciently long toproject over the extensions of the cap and provide additional stiffnessand support for that portion of the spring cap taking the load of Inassembling, the spring cap may be placed in the side frame before any ofthe springs are placed therein and the rollers then placed in positionon the. cap, the parts then being raised or held in position so that theframe can he moved sidewise over the ends of the spring plank and thebolster. '95 The springs (5 may he put on the spring plank before theside frame is moved into position, but the springs 6 cannot be set inplace'until after the cap and rollers are in position.- After the sideframe is in position, the outer 100 5 rings 6 may be set, whereupon thespring p ank may be lowered until it rests on the side frame. Thisoperation is very simple, provided there is sufiicient clearance belowthe compression member 1 to permitthe bolster to be raised so that itwill clearthe studs and flan es on the s rin ca as well'as theprojections and thecapand bolster which define the roller bearingsurfaces. \Vher the clearance is too restricted, I provide/an opening 19in each column? through either of which atter the bolster is raised, themiddle roller may be withdrawn into the open space between thecompression and tension members of the side frame at the outer side ofthe column, the roller, of course, be ing lifted over the retainingflange on the cap.

It will be noted that the cap constitutes a bearing plate for theseveral rollers and that the inner and outer rollers are disposed between the bolster hearing arms or wings 7 while the central rollerextends within the columns.

Having fully described in ention what I claim as new and desireto'secure by Letters Patent, is I In a car truck, a side frame having acompression member, a tension member, and columns connecting saidmembers, a spring plank resting on the tension member between thecolumns, a group of springs resting in part on the spring plank and inpart upon the tension member within the columns, a spring cap overlyingthe group of springs and having portions engaging within the columns, abolster, and rollers between the cap and the bolster, one of the rollersextending beyond the sides of the bolster over the extensions of thespring cap and within the columns.

2. In a car truck, a side frame having a compression member, a tensionmember, and columns connecting said members, a spring plank resting onthe tension member between the columns, a group of springs resting inpart on the spring plank and in part upon the tension member within thecolumns, a spring cap overlying the'group of springs and having portionsengaging within the columns. a bolster, and rollers between the cap andthe bolster, one of the rollers extending beyond the sides of thebolster over the extensions of the spring cap and within the columns,the

-cap and the bolster having roller-retaining 55 fl a side frame having aa tension member, andumns having lateral bolster bearing arms. a. I

spring plank resting on the tension member between the columns, a groupof springs resting partly on the spring plank and partly on the tensionmember within the columns, a spring cap overlying the group of springsand aving end portions disposed between the bolster bearing arms andcentral portions engaging within the columiis, a bolster. and rollersbetween the cap and the bolster. there being inner and outer rollersdisposed between the corresponding bolster bea ring arms and anotherroller extending beyond the sides of the bolster and within the columns.

In a car truck, the combination with a bolster and springs,"--the upperends of the springs being all in one plane. of a can resting on thesprings, rollers carried by said cap and directly supporting thebolster. an intermediate one of said rollers extending the full width ofand beyond the sides of the bolster.

In a car truck. the combination with a side frame having columnsdefining a bolster opening, a bolster entering such opening, andsprings, of a cap resting on and overlying said springs and havingportions engaging within the columns, rollers carried by said cap andsupporting the bolster. one of the rollers extending beyond the sides ofthe olster over the extensions of the cap and within the columns.

In a car truck. the combination with the two side frames and thebolster, of two groups of morethan four coiled springs supported uponsaid frames under the ends of said bolstcr, each of which groups has itssprings symmetrically arranged about a common center, and two sets oflateral motion devices, one set between each of said groups of springsand the said bolster. and which sets of lateral motion devices eachcomprise three rollers and a combined spring cap and three rollerbearing plate supported by the underlying group of springs with thecentral member of said rollers and the seat for the same in said platecentrally disposed in respect to the center line of the load strain onsaid groups of springs.

In testimony whereof, I-have signed this specification.

. SAMUEL P. BUSH.

